US Bridges

Cedar Brae Road over Nason Creek

Good

Chelan County, Washington · 00.15W SR207 · Structure no. 084439000000000

Built
1986
39 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
127 ft
1 main span
Daily traffic
1,945
2021 count
Owner
County
County Highway Agency

About this bridge

Cedar Brae Road over Nason Creek is a prestressed concrete stringer/multi-beam or girder carrying Cedar Brae Road over Nason Creek in Chelan County, Washington. It was built in 1986, so it is 39 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,945 vehicles a day, roughly 2% of them trucks, projected to reach 2,433 by 2041. The structure is 127 ft (38.7 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCedar Brae Road
CrossesNason Creek
Location00.15W SR207
RouteCounty Highway 39400
Coordinates47.8, -120.71667
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating32.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length127 ft (38.7 m)
Longest span127 ft (38.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,945 (2021)
Projected traffic2,433 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cedar Brae Road over Nason Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Cedar Brae Road over Nason Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Cedar Brae Road over Nason Creek carry?

About 1,945 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Cedar Brae Road over Nason Creek?

The structure is 127 ft (38.7 m) long with a longest span of 127 ft (38.7 m) and a deck 30 ft wide.

Who owns Cedar Brae Road over Nason Creek?

It is owned by the County Highway Agency.